BUILDING STRONG®PORTLAND DISTRICT 1

BUILDING STRONG®PORTLAND DISTRICT 2

BiOp Performance Standards for Dam Passage Survival

RPA RM&E Actions - Strategy 2 (Hydrosystem RM&E):Monitor average Dam Passage Survival (S̅�Dam) of juvenile run-of-river spring and summer migrants.•Action Agencies operate to achieve and maintain performance standards of:

Spring: S̅�Dam ≥ 96% (SE ≤ 1.5%) across all dams for yearling Chinook and steelhead

Summer: S̅�Dam ≥ 93% (SE ≤ 1.5%) across all dams for subyearling fall Chinook salmon

BUILDING STRONG®PORTLAND DISTRICT 3

2012 OBJECTIVESSnake River Performance Standard Tests

• Little Goose Dam Spring – Measure S̅�Dam and Route-Specific S̅ at 30% spill

Summer – Measure S̅�Dam and Route-Specific S̅ at 30% spill

• Lower Monumental Dam Spring – Measure S̅�Dam and Route-Specific S̅ at Gas Cap spill

Summer – Measure S̅�Dam and Route-Specific S̅ at 17k spill

BUILDING STRONG®PORTLAND DISTRICT 4

2012 OBJECTIVESLower Columbia River Performance Standard Tests• McNary Dam

Spring – Measure S̅�Dam and Route-Specific S̅ at 40% spill Summer – Measure S̅�Dam and Route-Specific S̅ at 50% spill

• John Day Dam Spring – Measure S̅�Dam at 30% and 40% spill Summer – Measure S̅�Dam at 30% and 40% spill

• The Dalles Dam Summer – Measure S̅�Dam at 40% spill

• Bonneville Dam Summer – Measure S̅�Dam at 85k day/Gas Cap night and 95k spill

BUILDING STRONG®PORTLAND DISTRICT 5

Data provided by Columbia River DART

10-yr Avg Outflow (2002-11)

2012 WATER YEAROutflow at The Dalles Dam

Outflow (kcfs)

BUILDING STRONG®PORTLAND DISTRICT 6

2012 STUDY DESIGNFish Selection Criteria

• Run-of-River fish collected at Juvenile Fish Facilities, selected for tagging based on criteria: Species: yearling Chinook (CH1), yearling steelhead (STH),

subyearling Chinook (CH0) No previous PIT-tag or active tag Alive with no severe or lethal injuries, diseases, etc. Forklength ≥ 95.0 mm

• Low rejection rate: 3.2-7.0%

BUILDING STRONG®PORTLAND DISTRICT 7

• Comparison of tagged fish vs. run-of-river fish Length and run timing similar (representative test group)

• Snake River - # tagged & released Spring (April 28 – May 28): CH1 = 6,199, STH = 6,202 Summer (June 4 – July 8): CH0 = 10,963

• Lower Columbia River - # tagged & released Spring (April 26 – June 1): CH1 = 5,848, STH = 5,838 Summer (June 12 – July 21): CH0 = 14,164

2012 RESULTS

BUILDING STRONG®PORTLAND DISTRICT 8

2012 RESULTSLittle Goose Dam

• Target spring & summer spill rate (4/3-8/31): 30%

CH1, STH4/28-5/28

Avg daily spill = 31.8%

CH06/4-7/8

Avg daily spill = 38.1%

Target spill (%) Actual Spill (%)Outflow (kcfs)

BUILDING STRONG®PORTLAND DISTRICT 9

Metric Yearling Chinook Salmon Juvenile Steelhead Subyearling Chinook Salmon

Dam Passage Survival

98.2%(SE 0.8%)

99.5%(SE 0.8%)

95.4%(SE 0.9%)

BRZ-BRZ Survival 98.1%(SE 0.8%)

99.4%(SE 0.8%)

94.5%(SE 1.0%)

SPE (%)* 65.3% 56.1% 72.5%

FPE (%) 96.3% 98.0% 95.1%

FB Residence median (h) 2.6 2.7 2.8

TR Egress median (h) 0.6 0.7 0.8

2012 RESULTSLittle Goose Dam

*SPE = % passed spillway, including spillway weirs

BUILDING STRONG®PORTLAND DISTRICT 10

2012 RESULTS Lower Monumental Dam

Target spill rate: Spring (4/3-6/20) = Gas Cap (~20-29k); Summer (6/21-8/31) = 17k.

June 21

Target spill (17k) Actual Spill (kcfs)Outflow (kcfs)

CH1, STH4/28-5/28

Avg daily spill = 31.5k

CH06/4-7/8

Avg daily spill = 25.4k

BUILDING STRONG®PORTLAND DISTRICT 11

Metric Yearling Chinook Salmon

Juvenile Steelhead

Subyearling Chinook Salmon

Dam Passage Survival

98.7%(SE 0.9%)

98.3%(SE 0.2%)

97.9%(SE 0.8%)

BRZ-BRZ Survival 98.6%(SE 0.9%)

98.2%(SE 0.2%)

97.2%(SE 0.8%)

SPE (%)* 78.9% 65.9% 83.6%

FPE (%) 94.8% 96.5% 92.4%

FB Residence median (h) 2.4 2.2 2.6

TR Egress median (h) 0.4 0.4 0.5

2012 RESULTS Lower Monumental Dam

*SPE = % passed spillway, including spillway weirs

BUILDING STRONG®PORTLAND DISTRICT 12

2012 RESULTS McNary Dam

Target spill rate: Spring (4/10-6/11) = 40%; Summer (6/12-8/31) = 50%.

Target spill (%) Actual Spill (%)Outflow (kcfs)

CH1, STH4/26-6/1

Avg daily spill= 50.6%

CH06/12-7/21

Avg daily spill = 60.9%

BUILDING STRONG®PORTLAND DISTRICT 13

Metric Yearling Chinook Salmon Juvenile Steelhead Subyearling Chinook Salmon

Dam Passage Survival

96.2%(SE 1.4%)

99.1%(SE 1.8%)

97.5%(SE 1.1%)

BRZ-BRZ Survival 96.0%(SE 1.4%)

98.8%(SE 1.8%)

97.3%(SE 1.1%)

SPE (%)* 72.5% 83.2% 78.3%

FPE (%) 96.8% 97.7% 90.9%

FB Residence median (h) 1.8 1.8 1.8

TR Egress (h) 0.4 0.3 0.4

2012 RESULTS McNary Dam

*SPE = % passed spillway, including spillway weirs

BUILDING STRONG®PORTLAND DISTRICT 14

2012 RESULTS John Day Dam

Target spring & summer spill rates (4/10-8/31): alternating blocks of 30% and 40%

Target spill (%) Actual Spill (%)Outflow (kcfs)

CH1, STH4/26-6/1

Avg daily spill= 37.3%

CH06/12-7/21

Avg daily spill = 38.0%

BUILDING STRONG®PORTLAND DISTRICT 15

Metric Yearling Chinook Salmon Juvenile Steelhead Subyearling Chinook Salmon

Dam Passage Survival

96.7%(SE 0.7%)

97.4%(SE 0.3%)

94.1%(SE 0.3%)

BRZ-BRZ Survival 96.6%(SE 0.7%)

96.9%(SE 0.3%)

93.9%(SE 0.3%)

SPE (%)* 74.6% 74.5% 69.6%

FPE (%) 92.7% 97.0% 85.8%

FB Residence median (h) 1.2 2.4 1.0

TR Egress (h) 0.5 0.5 0.5

2012 RESULTS John Day Dam

*SPE = % passed spillway, including spillway weirs

BUILDING STRONG®PORTLAND DISTRICT 16

John Day Dam – Dam Passage SurvivalSecond year of study

BUILDING STRONG®PORTLAND DISTRICT 17

2012 RESULTS The Dalles Dam (Summer only)

• Target spring & summer spill rate (4/10-8/31): 40%

Target spill (%) Actual Spill (%)Outflow (kcfs)

CH06/12-7/21

Avg daily spill = 40.5%

BUILDING STRONG®PORTLAND DISTRICT 18

Metric Subyearling Chinook Salmon

Dam Passage Survival

94.7%(SE 0.6%)

BRZ-BRZ Survival 94.6%(SE 0.6%)

SPE (%) 70.7%

FPE (%) 78.4%

FB Residence median (h) 1.1

TR Egress median (h) 0.2

2012 RESULTS The Dalles Dam

BUILDING STRONG®PORTLAND DISTRICT 19

2012 RESULTS Bonneville Dam (Summer only)

Target summer spill rates (6/16-7/21) = alternating blocks of 85k day/120k night and 95 kcfs all hours

Target spill (kcfs) Actual Spill (kcfs)Outflow (kcfs)

CH06/12-7/21

Avg daily spill = 147.2k

BUILDING STRONG®PORTLAND DISTRICT 20

Metric Subyearling Chinook Salmon

Dam Passage Survival

97.4%(SE 0.7%)

BRZ-BRZ Survival 97.4%(SE 0.5%)

SPE (%) 54.3%

FPE (%) 69.7%

FB Residence median (h) 0.5

TR Egress (h) 0.4

2012 RESULTS Bonneville Dam

BUILDING STRONG®PORTLAND DISTRICT 21

2012 SUMMARYSnake and Lower Columbia River Performance Standard Tests

• 14 Survival Tests Implemented (6 SR, 8 LCR) All 14 achieved BiOp Survival Standards (9 of these did so with single-release estimates) 13 of 14 achieved BiOp Precision Level Standard

• Spill Targets Difficult to Attain Due to High FlowsTDA and JDA within target range but JDA did not get enough 30% treatments to detect differencesAll other projects spilled higher than targetLGS, LMN: Comparison of early spring (higher flows) vs. late spring (lower flows) showed no difference in dam survival

BUILDING STRONG®PORTLAND DISTRICT 22

Next Steps

• Planned 2013 Performance Standard Testing

LGS – Summer (CH0)

LMN – Summer (CH0)

BUILDING STRONG®PORTLAND DISTRICT 23

Metric Yearling Chinook Salmon Juvenile Steelhead Subyearling Chinook Salmon

Spillway Weir (surface spill)

% Passed = 44%

% Survival = 100.4%

% Passed = 40%

% Survival = 100.1%

% Passed = 48%

% Survival = 96.2%

Spillway (deep spill)

% Passed = 21%

% Survival = 94.9%

% Passed = 16%

% Survival = 99.2%

% Passed = 25%

% Survival = 94.2%

JBS% Passed = 31%

% Survival = 98.8%

% Passed = 42%

% Survival = 99.7%

% Passed = 23%

% Survival = 98.1%

Turbine% Passed = 4%

% Survival = 87.0%

% Passed = 2%

% Survival = 80.6%

% Passed = 5%

% Survival = 81.3%

2012 RESULTSLittle Goose Dam – Route-Specific

BUILDING STRONG®PORTLAND DISTRICT 24

Metric Yearling Chinook Salmon Juvenile Steelhead Subyearling Chinook Salmon

Spillway Weir (surface spill)

% Passed = 62%

% Survival = 99.8%

% Passed = 53%

% Survival = 99.1%

% Passed = 58%

% Survival = 98.6%

Spillway (deep spill)

% Passed = 17%

% Survival = 94.6%

% Passed = 13%

% Survival = 97.4%

% Passed = 25%

% Survival = 97.9%

JBS*% Passed = 16%

% Survival = 100.7%

% Passed = 31%

% Survival = 99.1%

% Passed = 9%

% Survival = 101.2%

Turbine% Passed = 5%

% Survival = 93.2%

% Passed = 3%

% Survival = 81.4%

% Passed = 8%

% Survival = 89.9%

2012 RESULTSLower Monumental Dam – Route-Specific

*JBS Outfall flume relocated in 2012: extended downstream ~650 meters and into channel ~110 meters.

BUILDING STRONG®PORTLAND DISTRICT 25

Metric Yearling Chinook Salmon Juvenile Steelhead Subyearling Chinook Salmon

Spillway Weir (surface spill)

% Passed = 8.1%

% Survival = 97.6%

% Passed = 21.5%

% Survival = 97.6%

n/a

(no spillway weir in summer)

Spillway(deep spill)

% Passed = 62.3%

% Survival = 97.1%

% Passed = 55.4%

% Survival = 100.1%

% Passed = 76.3%

% Survival = 98.0%

JBS*% Passed = 23.4%

% Survival = 93.6%

% Passed = 13.4%

% Survival = 101.5%

% Passed = 12.2%

% Survival = 100.8%

Turbine% Passed = 3.1%

% Survival = 95.5%

% Passed = 2.1%

% Survival = 83.1%

% Passed = 8.9%

% Survival = 88.1%

2012 RESULTSMcNary Dam – Route-Specific

*JBS Outfall flume replaced and relocated in 2012.